针对中国东部中高渗老油田开发中后期剩余油分布预测研究,采用受力分析、理论模型建立及实例研究的方法,对开发流体势控制的剩余油分布机理进行研究.以Hubbert流体势理论为基础,对已开发油藏流体进行受力分析,确定流体所具有的开发流体势能类型及地质意义,建立中高渗油藏不同开发阶段流体势理论模型,研发了开发流体势模拟软件,提出一种基于开发流体势场的剩余油表征方法.结果表明:不同类型开发流体势场对油水运动控制存在差异性,提出3类流体势低势区,即低位能、低压能及低界面能低势区,运用开发流体势原理对文33沙二下油藏进行实例解剖分析,提出3类低势区控制的剩余油富集区,即低位能低势区控制的“阁楼型”剩余油、低压能低势区控制的“动态型”剩余油和低界面能低势区控制的“边缘型”剩余油,相应低势区流体势分布为2.7×107~3.1×107 J/m3,有效预测了不同类型剩余油的空间分布. In view of the prediction of the remaining oil distribution in the middle and late development of the medium-high permeability oilfield in east China, the distribution mechanism of remaining oil for the development of fluid potential control is studied by using mechanics analysis, theoretical model and case study. Based on Hubbert fluid potential theory , The force analysis of the developed reservoir fluid is carried out to determine the fluid potential energy type and geological significance of the development fluid and to establish the fluid potential theory model in different development stages of the medium and high permeability reservoirs and to develop the fluid potential simulation software developed based on The results show that there are differences in the control of oil-water movement between different types of developing fluid potential fields, and three types of low-potential fluid potential areas are proposed, that is, low potential energy, low pressure energy and low interface energy potential area, Using the developed fluid potential theory, an example of anaesthetical analysis of reservoir No. 2 in Wen-33 sand reservoir was proposed, and the remaining oil-enriched area under the control of 3 low-potential areas was proposed, that is, “loft-type” residual oil controlled by low- The “” residual “oil” and the “residual oil” controlled by the low interface and the low interface can be controlled by the low potential area. The distribution of fluid potential in the corresponding low potential area is 2.7 × 107 ~ 3.1 × 107 J / m3 , Effectively predict the spatial distribution of different types of remaining oil.